Countdown timer for U.S. Coast Guard Communications Center Console. Arduino based application to count down from 15 or 30-minutes, standard patrol communications check-in intervals, or set any time between 1 and 99 minutes. 15 or 30-minute times selected and count down start on a button press.
- Set and start 15 or 30-minute countdown using single button press
- Dial in 1 to 99-minutes using rotary encoder
- Outputs minutes and seconds to 4-digit 7-segment LED display
- Arduino Nano Every MCU
- ATMega48095 Microcontroller
- 7-21VDC VIN
- 20MHz Clock Speed
- ATSAMD11D14A based USB interface
- GB4943, WEE, RCM, RoHS, CE, FCC, UKCA, REACH Conformities
- Adafruit I2C Rotary Encoder Breakout
- Adafruit MicroSD card breakout board+
- Adafruit Rotary Encoder
- Adafruit 4-digit 7-segment I2C display RED
- Adafruit STEMMA Piezo Driver Amp - PAM8904
- Adafruit passive Buzzer Module
- 2 Sparkfun 4-character 14-segment I2C displays GREEN
- 3 momentary pushbutton switches
- Arduino's SD card manager v1.2.4
- J. Christensen's button management v2.1.2
- SparkFun's alphanumeric display v2.2.9
- Adafruit's GFX v1.11.9
- Adafruit's LED backpack v1.4.1
- Adafruit's seesaw v1.7.5
- Rob Tillaart's countdown timer v0.3.2
Asset Labels come from plain text file assets.txt on standard FAT16 or FAT32 formatted microSD card. Labels are 8 alpha-numeric characters maximum separated by commas and no spaces between labels one 1 line There is no limit to the number of loadable labels example: CG47211,CG47246,CG29291,CG27111,OTHER, <<---- this last comma signifies end of labels